English Safety Data Sheet Database 中文版 MSDS

1-Penten-3-one

CAS No. 1629-58-9 | PubChem CID 15394
Section 1. Identification
Chemical Name1-Penten-3-one CAS No.1629-58-9
Synonymsethylvinyl ketone; l-penten-3-on Chinese Name1-戊烯-3-酮
Molecular FormulaC5H8O Molecular Weight84.1164
UN No.1224 Data SourcePubChem (NIH/NLM)
GHS Hazard Classification
Signal Word DANGER
Pictograms GHS02 · Flammable
Hazard Statements H225
Precautionary Statements P210P233P240P241P242P243P280P303+P361+P353P370+P378P403+P235P501

Section 2. Hazards Identification

H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]

P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 1577 reports by companies from 6 notifications to the ECHA C&L Inventory.

Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Section 9. Physical and Chemical Properties

Liquid, polymerizes readily with heat or in the presence of alkali; powerful penetrating odour

38.00 °C. @ 60.00 mm Hg

68-70 °C (200 mm Hg)

insoluble in water; soluble in most organic solvents

Miscible at room temperature (in ethanol)

0.842-0.848

1.417-1.422

Boiling point

Chemical shift

Heat of sublimation

Lineshape

Optical coefficient

Refractive index

Thermal expansion coefficient

Vapor pressure

EU Flavoring substances

FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT -> FDA Substance added to food

Fragrance Ingredient (1-Penten-3-one) -> IFRA transparency List

Fatty Acyls [FA] -> Oxygenated hydrocarbons [FA12]

Source: PubChem CID 15394 (NIH/NLM, public domain). Retrieved from PubChem, a public-domain chemistry database maintained by the U.S. National Library of Medicine. Last updated: 2026-08-02 09:59:25.
Disclaimer: This information is compiled for reference only and does not replace the manufacturer's official Safety Data Sheet. Always consult the supplier's SDS before handling any chemical.